ReactOS 0.4.15-dev-8419-g7f0e8a3
pc98mem.c File Reference
#include <freeldr.h>
#include <debug.h>
Include dependency graph for pc98mem.c:

Go to the source code of this file.

Macros

#define KB   1024
 
#define MB   (KB * KB)
 

Functions

 DBG_DEFAULT_CHANNEL (MEMORY)
 
VOID SetMemory (PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG_PTR BaseAddress, SIZE_T Size, TYPE_OF_MEMORY MemoryType)
 
VOID ReserveMemory (PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG_PTR BaseAddress, SIZE_T Size, TYPE_OF_MEMORY MemoryType, PCHAR Usage)
 
ULONG PcMemFinalizeMemoryMap (PFREELDR_MEMORY_DESCRIPTOR MemoryMap)
 
PFREELDR_MEMORY_DESCRIPTOR Pc98MemGetMemoryMap (ULONG *MemoryMapSize)
 

Variables

BOOLEAN HiResoMachine
 
static FREELDR_MEMORY_DESCRIPTOR Pc98MemoryMap [MAX_BIOS_DESCRIPTORS+1]
 

Macro Definition Documentation

◆ KB

#define KB   1024

Definition at line 40 of file pc98mem.c.

◆ MB

#define MB   (KB * KB)

Definition at line 41 of file pc98mem.c.

Function Documentation

◆ DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL ( MEMORY  )

◆ Pc98MemGetMemoryMap()

PFREELDR_MEMORY_DESCRIPTOR Pc98MemGetMemoryMap ( ULONG MemoryMapSize)

Definition at line 48 of file pc98mem.c.

49{
50 USHORT ConventionalMemory, ExtendedMemory;
51 ULONG ExtendedMemory16;
52
53 TRACE("Pc98MemGetMemoryMap()\n");
54
57
58 ConventionalMemory = ((*(PUCHAR)MEM_BIOS_FLAG1 & CONVENTIONAL_MEMORY_SIZE) + 1) * 128;
59 ExtendedMemory = *(PUCHAR)MEM_EXPMMSZ * 128;
60 ExtendedMemory16 = (*(PUCHAR)MEM_EXPMMSZ16M_LOW + (*(PUCHAR)MEM_EXPMMSZ16M_HIGH << 8)) * 1024;
61
62 if (ConventionalMemory > 640 && !HiResoMachine)
63 ConventionalMemory = 640;
64
65 TRACE("Total conventional memory %d kB available.\n", ConventionalMemory);
66 TRACE("Total extended memory %d kB available.\n", ExtendedMemory);
67 TRACE("Total extended high memory %d kB available.\n", ExtendedMemory16);
68 TRACE("Installed physical memory %d kB.\n", ConventionalMemory + ExtendedMemory + ExtendedMemory16);
69
70 /* First, setup allowed ranges */
71 SetMemory(Pc98MemoryMap, 0x0000600, ConventionalMemory * KB, LoaderFree);
72 SetMemory(Pc98MemoryMap, 0x0100000, ExtendedMemory * KB, LoaderFree);
73 SetMemory(Pc98MemoryMap, 0x1000000, ExtendedMemory16 * KB, LoaderFree);
74
75 /* Next, setup some protected ranges */
76 if (HiResoMachine)
77 {
78 SetMemory(Pc98MemoryMap, 0x000000, 1 * KB, LoaderFirmwarePermanent); /* Real mode IVT */
79 SetMemory(Pc98MemoryMap, 0x000400, 512, LoaderFirmwarePermanent); /* Real mode BDA */
80 SetMemory(Pc98MemoryMap, 0x080000, 256 * KB, LoaderFirmwarePermanent);/* Memory Window */
81 SetMemory(Pc98MemoryMap, 0x0C0000, 128 * KB, LoaderFirmwarePermanent);/* VRAM */
82 SetMemory(Pc98MemoryMap, 0x0E0000, 16 * KB, LoaderFirmwarePermanent); /* Text VRAM */
83 SetMemory(Pc98MemoryMap, 0x0E4000, 4 * KB, LoaderFirmwarePermanent); /* CG Window */
84 SetMemory(Pc98MemoryMap, 0x0E5000, 103 * KB, LoaderSpecialMemory); /* BIOS ROM */
85 SetMemory(Pc98MemoryMap, 0xF00000, 640 * KB, LoaderSpecialMemory); /* Reserved */
86 }
87 else
88 {
89 SetMemory(Pc98MemoryMap, 0x000000, 1 * KB, LoaderFirmwarePermanent); /* Real mode IVT */
90 SetMemory(Pc98MemoryMap, 0x000400, 512, LoaderFirmwarePermanent); /* Real mode BDA */
91 SetMemory(Pc98MemoryMap, 0x000600 + ConventionalMemory * KB,
92 (640 - ConventionalMemory) * KB, LoaderSpecialMemory); /* External bus */
93 SetMemory(Pc98MemoryMap, 0x0A0000, 16 * KB, LoaderFirmwarePermanent); /* Text VRAM */
94 SetMemory(Pc98MemoryMap, 0x0A4000, 4 * KB, LoaderFirmwarePermanent); /* CG Window */
95 SetMemory(Pc98MemoryMap, 0x0A5000, 12 * KB, LoaderFirmwarePermanent); /* Reserved */
96 SetMemory(Pc98MemoryMap, 0x0A8000, 96 * KB, LoaderFirmwarePermanent); /* VRAM (Plane B, R, G) */
97 SetMemory(Pc98MemoryMap, 0x0C0000, 128 * KB, LoaderSpecialMemory); /* BIOS ROM (Peripherals) */
98 SetMemory(Pc98MemoryMap, 0x0E0000, 32 * KB, LoaderFirmwarePermanent); /* VRAM (Plane I) */
99 SetMemory(Pc98MemoryMap, 0x0E8000, 96 * KB, LoaderSpecialMemory); /* BIOS ROM */
100 SetMemory(Pc98MemoryMap, 0xF00000, 640 * KB, LoaderSpecialMemory); /* Reserved */
101 }
102
103 *MemoryMapSize = PcMemFinalizeMemoryMap(Pc98MemoryMap);
104 return Pc98MemoryMap;
105}
#define MEM_EXPMMSZ16M_HIGH
Definition: machpc98.h:50
#define MEM_EXPMMSZ16M_LOW
Definition: machpc98.h:47
#define MEM_BIOS_FLAG1
Definition: machpc98.h:35
#define MEM_EXPMMSZ
Definition: machpc98.h:19
#define CONVENTIONAL_MEMORY_SIZE
Definition: machpc98.h:36
#define KB
Definition: pc98mem.c:40
ULONG PcMemFinalizeMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap)
Definition: pcmem.c:547
static FREELDR_MEMORY_DESCRIPTOR Pc98MemoryMap[MAX_BIOS_DESCRIPTORS+1]
Definition: pc98mem.c:43
VOID SetMemory(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG_PTR BaseAddress, SIZE_T Size, TYPE_OF_MEMORY MemoryType)
Definition: pcmem.c:527
BOOLEAN HiResoMachine
Definition: machpc98.c:17
#define MAX_BIOS_DESCRIPTORS
Definition: pcbios.h:12
ULONG PcBiosMapCount
Definition: pcmem.c:38
BIOS_MEMORY_MAP PcBiosMemoryMap[MAX_BIOS_DESCRIPTORS]
Definition: pcmem.c:37
unsigned short USHORT
Definition: pedump.c:61
@ LoaderFree
Definition: arc.h:176
@ LoaderFirmwarePermanent
Definition: arc.h:180
@ LoaderSpecialMemory
Definition: arc.h:196
#define TRACE(s)
Definition: solgame.cpp:4
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59

Referenced by MachInit().

◆ PcMemFinalizeMemoryMap()

ULONG PcMemFinalizeMemoryMap ( PFREELDR_MEMORY_DESCRIPTOR  MemoryMap)

Definition at line 547 of file pcmem.c.

549{
550 ULONG i;
551
552 /* Reserve some static ranges for freeldr */
553 ReserveMemory(MemoryMap, 0x1000, STACKLOW - 0x1000, LoaderFirmwareTemporary, "BIOS area");
556
557 /* Default to 1 page above freeldr for the disk read buffer */
560
561 /* Scan for free range above freeldr image */
562 for (i = 0; i < PcMapCount; i++)
563 {
564 if ((MemoryMap[i].BasePage > (FREELDR_BASE / PAGE_SIZE)) &&
565 (MemoryMap[i].MemoryType == LoaderFree))
566 {
567 /* Use this range for the disk read buffer */
568 DiskReadBuffer = (PVOID)(MemoryMap[i].BasePage * PAGE_SIZE);
571 break;
572 }
573 }
574
575 TRACE("DiskReadBuffer=0x%p, DiskReadBufferSize=0x%lx\n",
577
579
580 /* Now reserve the range for the disk read buffer */
585 "Disk read buffer");
586
587 TRACE("Dumping resulting memory map:\n");
588 for (i = 0; i < PcMapCount; i++)
589 {
590 TRACE("BasePage=0x%lx, PageCount=0x%lx, Type=%s\n",
591 MemoryMap[i].BasePage,
592 MemoryMap[i].PageCount,
593 MmGetSystemMemoryMapTypeString(MemoryMap[i].MemoryType));
594 }
595 return PcMapCount;
596}
#define ALIGN_UP_BY(size, align)
BIOS_MEMORY_MAP MemoryMap[32]
Definition: loader.c:11
#define DiskReadBuffer
Definition: hardware.h:33
#define FREELDR_BASE
Definition: hardware.h:18
SIZE_T FrLdrImageSize
Definition: meminit.c:35
#define PAGE_SIZE
Definition: env_spec_w32.h:49
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
SIZE_T DiskReadBufferSize
Definition: hwdisk.c:50
#define ASSERT(a)
Definition: mode.c:44
#define min(a, b)
Definition: monoChain.cc:55
VOID ReserveMemory(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG_PTR BaseAddress, SIZE_T Size, TYPE_OF_MEMORY MemoryType, PCHAR Usage)
Definition: pcmem.c:484
ULONG PcMapCount
Definition: pcmem.c:41
@ LoaderFirmwareTemporary
Definition: arc.h:179
@ LoaderLoadedProgram
Definition: arc.h:178
@ LoaderOsloaderStack
Definition: arc.h:182
void * PVOID
Definition: typedefs.h:50
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define STACKLOW
Definition: x86common.h:15
#define STACKADDR
Definition: x86common.h:16
#define MAX_DISKREADBUFFER_SIZE
Definition: x86common.h:30

Referenced by Pc98MemGetMemoryMap().

◆ ReserveMemory()

VOID ReserveMemory ( PFREELDR_MEMORY_DESCRIPTOR  MemoryMap,
ULONG_PTR  BaseAddress,
SIZE_T  Size,
TYPE_OF_MEMORY  MemoryType,
PCHAR  Usage 
)

Definition at line 484 of file pcmem.c.

490{
491 ULONG_PTR BasePage, PageCount;
492 ULONG i;
493
494 BasePage = BaseAddress / PAGE_SIZE;
496
497 for (i = 0; i < PcMapCount; i++)
498 {
499 /* Check for conflicting descriptor */
500 if ((MemoryMap[i].BasePage < BasePage + PageCount) &&
501 (MemoryMap[i].BasePage + MemoryMap[i].PageCount > BasePage))
502 {
503 /* Check if the memory is free */
504 if (MemoryMap[i].MemoryType != LoaderFree)
505 {
508 __FILE__,
509 __LINE__,
510 "Failed to reserve memory in the range 0x%Ix - 0x%Ix for %s",
512 Size,
513 Usage);
514 }
515 }
516 }
517
518 /* Add the memory descriptor */
521 BasePage,
522 PageCount,
523 MemoryType);
524}
VOID FrLdrBugCheckWithMessage(ULONG BugCode, PCHAR File, ULONG Line, PSTR Format,...)
Definition: debug.c:28
@ MEMORY_INIT_FAILURE
Definition: debug.h:146
_Must_inspect_result_ _In_ USAGE _In_ USHORT _In_ USAGE Usage
Definition: hidpi.h:384
_In_ HANDLE _Outptr_result_bytebuffer_ ViewSize PVOID * BaseAddress
Definition: mmfuncs.h:404
ULONG AddMemoryDescriptor(IN OUT PFREELDR_MEMORY_DESCRIPTOR List, IN ULONG MaxCount, IN PFN_NUMBER BasePage, IN PFN_NUMBER PageCount, IN TYPE_OF_MEMORY MemoryType)
Definition: meminit.c:102
_Must_inspect_result_ _In_ WDFDEVICE _In_ PWDF_DEVICE_PROPERTY_DATA _In_ DEVPROPTYPE _In_ ULONG Size
Definition: wdfdevice.h:4533
#define ADDRESS_AND_SIZE_TO_SPAN_PAGES(_Va, _Size)

◆ SetMemory()

VOID SetMemory ( PFREELDR_MEMORY_DESCRIPTOR  MemoryMap,
ULONG_PTR  BaseAddress,
SIZE_T  Size,
TYPE_OF_MEMORY  MemoryType 
)

Definition at line 527 of file pcmem.c.

532{
533 ULONG_PTR BasePage, PageCount;
534
535 BasePage = BaseAddress / PAGE_SIZE;
537
538 /* Add the memory descriptor */
541 BasePage,
542 PageCount,
543 MemoryType);
544}

Referenced by Pc98MemGetMemoryMap().

Variable Documentation

◆ HiResoMachine

BOOLEAN HiResoMachine
extern

Definition at line 17 of file machpc98.c.

Referenced by Pc98MemGetMemoryMap().

◆ Pc98MemoryMap

Definition at line 43 of file pc98mem.c.

Referenced by Pc98MemGetMemoryMap().